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National Vulnerability Database

National Vulnerability Database

NVD

National Vulnerability Database
  1. Vulnerabilities

CVE-2026-24850 Detail

Description

The ML-DSA crate is a Rust implementation of the Module-Lattice-Based Digital Signature Standard (ML-DSA). Starting in version 0.0.4 and prior to version 0.1.0-rc.4, the ML-DSA signature verification implementation in the RustCrypto `ml-dsa` crate incorrectly accepts signatures with repeated (duplicate) hint indices. According to the ML-DSA specification (FIPS 204 / RFC 9881), hint indices within each polynomial must be **strictly increasing**. The current implementation uses a non-strict monotonic check (`<=` instead of `<`), allowing duplicate indices. This is a regression bug. The original implementation was correct, but a commit in version 0.0.4 inadvertently changed the strict `<` comparison to `<=`, introducing the vulnerability. Version 0.1.0-rc.4 fixes the issue.


Metrics

 
NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

References to Advisories, Solutions, and Tools

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URL Source(s) Tag(s)
https://csrc.nist.gov/pubs/fips/204/final GitHub, Inc.
https://datatracker.ietf.org/doc/html/rfc9881 GitHub, Inc.
https://github.com/C2SP/wycheproof GitHub, Inc.
https://github.com/C2SP/wycheproof/blob/master/testvectors_v1/mldsa_44_verify_test.json GitHub, Inc.
https://github.com/C2SP/wycheproof/blob/master/testvectors_v1/mldsa_65_verify_test.json GitHub, Inc.
https://github.com/C2SP/wycheproof/blob/master/testvectors_v1/mldsa_87_verify_test.json GitHub, Inc.
https://github.com/RustCrypto/signatures/commit/400961412be2e2ab787942cf30e0a9b66b37a54a GitHub, Inc.
https://github.com/RustCrypto/signatures/commit/b01c3b73dd08d0094e089aa234f78b6089ec1f38 GitHub, Inc.
https://github.com/RustCrypto/signatures/issues/894 GitHub, Inc.
https://github.com/RustCrypto/signatures/pull/895 GitHub, Inc.
https://github.com/RustCrypto/signatures/security/advisories/GHSA-5x2r-hc65-25f9 GitHub, Inc.

Weakness Enumeration

CWE-ID CWE Name Source
CWE-347 Improper Verification of Cryptographic Signature GitHub, Inc.  

Change History

1 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2026-24850
NVD Published Date:
01/27/2026
NVD Last Modified:
01/27/2026
Source:
GitHub, Inc.